Alfred e



(No Model.)

A. E. DETWILER. STOVE DOOR HINGE.

No. 553,484; Patented Jan. 21, 1896.

AN DREW B GRAHAM. PHQTUUTHQWASHINGIDND C NITED STATES PATENT OFFICE.

ALFRED E. DETVVILER, OF MILXVAUKEE, NISCONSIN, ASSIGNOR TO THEMILYVAUKEF. GAS STOVE COMPANY, OF SAME PLACE.

STOVE-DOOR HINGE.

SPECIFICATION forming part of Letters Patent No. 553,484, dated January21, 1896.

Application filed February 12,1894. Serial No. 499,840. (No model.)

To all whom it may concern:

Be it known that I, ALFRED E. DETWILER, of Milwaukee, in the county ofMilwaukee and State of Wisconsin, have invented certain new and usefulImprovements in Stove-Door Hinges; and I do hereby declare that thefollowing is a full, clear, and exact description of the invention,which will enable others skilled in the art to which it pertains to makeand use the same, reference being had to the accompanying drawings, andto the letters of reference marked thereon, which form a part of thisspecification.

The main objects of my invention are to prevent the dropping or abruptopening of stovedoors and consequent strain upon their hinges andconnections, to automatically close or assist in closing such doors, andto limit their opening at the desired point.

It consists of certain peculiarities in the construction of hinges andtheir connections designed to accomplish the foregoing objects, ashereinafter particularly described, and pointed outin the claims.

In the accompanying drawings like letters designate the same parts inthe several figures.

Figure 1 is a front elevation of a stove or. oven door and theassociated parts to which my improvements are applied. Fig. 2 is ahorizontal section on the line 2 2, Fig. 1. Fig. 3 is an enlargedvertical section on the line 3 3, Fig. 1, showing the position of thehinge when the door is closed. Fig. 4 is a similar section showing thedoor open; and Fig. 5 is a vertical section on the line 5 5, Fig. 1.

A designates a stove, oven or range door having its hinges at the loweredge and opening downwardly. It is cast or otherwise formed withsemicylindrical trunnions a a, formed with longitudinal wings a a, asclearly shown in Fig. 5.

B represents the door frame or plate of the stove or range, formed orprovided on opposite sides of and at the bottom of the dooropening withsemicylindrical or elliptical seats or bearings 12 b, as clearly shownin Fig. 4, for the trunnions a a.

O O are leaf-springs attached to the sides of the door frame or plate bymeans of plates or castings D D placed over their upper ends and securedto said door-frame by screws or bolts dd. These springs extend at theirfree ends over and are preferably slightly bent around the trunnions aa, as shown in Fig. 5.

Pressing against the outer sides of said trunv nions, they serve askeepers to hold them in place in their bearings 12 b, and by engagementwith the wings a a tend to hold the door either open or closed and toprevent its abrupt dropping or opening, and thereby breaking orstraining the hinges and their connections. They also serve toautomatically close or assist in closing the door.

The castings D D are preferably recessed on the back between the ends,as shown in Figs. 4 and 5, in order to concentrate the bearing at theirlower ends against the springs, and thus clamp them firmly to thedoor-frame at these points. They are preferably formed at their lowerends with extensions overhanging the springs and provided with screws dd for adjusting the tension of said springs or causing them to bear withmore or less force against the trunnions of the door.

To stop the door when it is opened in a horizontal position or in aposition approximately at right angles to the door frame or plate, I mayform one or both of the trunnions with arms a e, and the door frame orplate with lugs or projections ff, arranged in the path of said arms.

The bearings 12 b are made elliptical or elongated to allow a slightvertical play of the trunnions for the purpose of permitting the ears orprojections g g on the door to pass over and into engagementwith thebeveled notched projections h h on the door-frame or to allow for theengagement and disengagement of such latch or fastening as the door maybe provided with.

By reference to Fig. 5 it will be seen that when the door is closed thesprings 0, pressing against the outer fiat side of the wings a, tend toretain the door in that position, and by reference to Fig. 4. it will beseen that when the door is open to the full extent said springs, bearingdirectly against the outer edges of said wings in a plane perpendicularto the axis of the trunnions, will tend to hold the door in thatposition. As the wings are turned from the position in which they areshown in Fig. 5 to that in which they are shown in Fig. 4: the springs CO are thereby strained and tend to check the movement of the door; butby their resiliency they assist to close the door when it is swung inthe opposite direction. If they are. made of sufficient stiffness theywill automatically close the door, especially when it is hung at oneside and arranged to swing horizontally.

Although I have shown my improvements applied to a drop ordownwardly-opening door, and they are particularly adapted thereto, theymay be employed to advantage with horizontally-swinging doors.

Various changes in minor details of construction may be made within theintended scope of my invention.

I claim- 1. The combination with a door frame provided with openbearings, of a door provided with trunnions adapted to turn in saidbearings and formed with wings, and springs secured at one end to saiddoor frame and projecting over and pressing at their opposite endsagainst said trunnions and holding them in their seats, substantially asand for the purposes set forth.

2. The combination of a vertically swinging door provided withsemi-cylindrical trunnions having laterally projecting longitudinalwings, a door plate or frame provided on the upper side with a bevelednotched projection adapted to engage said door and hold it closed, andon the under side with vertically elongated seats or bearings for saidtrunnions, and springs attached at one end to said door frame andprojecting at their free ends over and pressing against the outer sidesof said trunnions and holding them in their seats, substantially as andfor the purposes set forth.

The combination of a stove doorprovided with trunnions having Wings andarms, a door frame or plate provided with open bearings in which saidtrunnions are loosely seated and with lugs or projections in the pathsof said arms, and springs attached to said door plate or frame andextending at their free ends over and pressing against said trunnionsand holding them in their bearings, substantially as and for thepurposes set forth.

4. The combination of a stove door provided with trunnions having wings,a door plate or frame provided with bearings in which said trunnions areloosely seated, and springs attached at one end to said door frame byclamping plates which are screwed to the door frame, and projecting attheir free ends over and engaging with said wings, substantially as andfor the purposes set forth.

5. The combination of astove door provided with trunnions having wings,a door frame having seats in which said trunnions are loosely seated,springs hearing at their free ends against the outer sides of saidwings, and clamping plates secured over the opposite ends of saidsprings to said door frame or plate and provided with adjusting screwsin extensions overhanging said springs, substantially as and for thepurposes set forth.

I11 testimony that I claim the foregoing as my own I affix my signaturein presence of two witnesses.

ALFRED E. DETVVILER.

Witnesses CHAS. L. Goss, M. L. EMERY.

